Graphene-based mesoporous nanocomposites of spherical shape with a 2-D layered structure

3-D mesoporous spherical RGO composites with a layered structure were synthesized by a process combining evaporation induced self-assembly (EISA) and spray pyrolysis. The specific capacitancesof these structured materials (M-RGO/carbon) as high as 200 F g(-1) in aqueous electrolytes had been achieved.